Book Image

Modern Python Standard Library Cookbook

By : Alessandro Molina
Book Image

Modern Python Standard Library Cookbook

By: Alessandro Molina

Overview of this book

The Python 3 Standard Library is a vast array of modules that you can use for developing various kinds of applications. It contains an exhaustive list of libraries, and this book will help you choose the best one to address specific programming problems in Python. The Modern Python Standard Library Cookbook begins with recipes on containers and data structures and guides you in performing effective text management in Python. You will find Python recipes for command-line operations, networking, filesystems and directories, and concurrent execution. You will learn about Python security essentials in Python and get to grips with various development tools for debugging, benchmarking, inspection, error reporting, and tracing. The book includes recipes to help you create graphical user interfaces for your application. You will learn to work with multimedia components and perform mathematical operations on date and time. The recipes will also show you how to deploy different searching and sorting algorithms on your data. By the end of the book, you will have acquired the skills needed to write clean code in Python and develop applications that meet your needs.
Table of Contents (21 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Cleanup text


When analyzing user-provided text, we are frequently interested only in meaningful words; punctuation, spaces, and conjunctions might easily get in our way. Suppose you want to count word frequencies in a book, you don't want to end up with "world" and "world" being counted as two different words.

How to do it...

You have to perform the following steps:

  1. Supply the text you want to clean up:
txt="""And he looked over at the alarm clock,ticking on the chest of drawers. "God in Heaven!" he thought.It was half past six and the hands were quietly moving forwards,it was even later than half past, more like quarter to seven.Had the alarm clock not rung? He could see from the bed that ithad been set for four o'clock as it should have been; it certainly must have rung.Yes, but was it possible to quietly sleep through that furniture-rattling noise?True, he had not slept peacefully, but probably all the more deeply because of that."""
  1. We can rely on string.punctuation to know which characters...